Update rake requirement from ~> 10.5.0 to ~> 13.2.1

Updates the requirements on [rake](https://github.com/ruby/rake) to permit the latest version.
- [Release notes](https://github.com/ruby/rake/releases)
- [Changelog](https://github.com/ruby/rake/blob/master/History.rdoc)
- [Commits](ruby/rake@v10.5.0...v13.2.1)

---
updated-dependencies:
- dependency-name: rake
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

rspec_api_documentation.gemspec

@@ -23,7 +23,7 @@ Gem::Specification.new do |s|
   s.add_development_dependency "sinatra", "~> 1.4.7"
   s.add_development_dependency "aruba", "~> 0.14.14"
   s.add_development_dependency "capybara", "~> 3.39.2"
-  s.add_development_dependency "rake", "~> 10.5.0"
+  s.add_development_dependency "rake", "~> 13.2.1"
   s.add_development_dependency "rack-test", "~> 0.6.3"
   s.add_development_dependency "rack-oauth2", "~> 1.12.0"
   s.add_development_dependency "webmock", "~> 3.8.3"